作者机构：[Yu, Z] College of Mathematics and Systems Science, Shandong University of Science and Technology, Qingdao, 266590, China;[ Zhao, Y] College of Mathematics and Systems Science, Shandong University of Science and Technology, Qingdao, 266590, China;[ Zhang, W] College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, 266590, China